H.264 direct mode with fractional MVs

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  • aswinkumaran
    Junior Member
    Junior Member
    • Jul 2010
    • 1

    H.264 direct mode with fractional MVs

    Hi,

    Can somebody tell me how an encoder(JM) can be forced to generate bitstreams in which the B frames have all MBs coded :
    1.in direct mode AND
    2. with fractional Motion vectors.

    1. is easy by artifically forcing a very low direct mode cost and thus the encoder always chooses direct mode.

    2. But i am not able to figure out how to force all the direct mode MVs to be fractional( non-integer-pel)? Is this possible and if yes, how does one do it?

    Any hints would be gratefully received
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